Home / 280,326.28-386,847.48-153,000.76

Finding the Fourth Proportional to 280,326.28, 386,847.48 and 153,000.76

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Solution

The fourth proportional to 280,326.28, 386,847.48 and 153,000.76 is: 211,139.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,326.28 : 386,847.48 = 153,000.76 : x
  2. Step 2: Convert to fraction form
    280,326.28/386,847.48 = 153,000.76/x
  3. Step 3: Cross multiply
    280,326.28x = 386,847.48 × 153,000.76
  4. Step 4: Simplify right side
    280,326.28x = 59,187,958,444.08
  5. Step 5: Solve for x
    x = 59,187,958,444.08/280,326.28
  6. Step 6: Final answer
    x = 211,139.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.